SYNTHESIS AND CHARACTERIZATION OF SOME AMPHIPHILIC STYRYL DYES AND THEIR APPLICATION ON WOOL FABRIC
SYNTHESIS AND CHARACTERIZATION OF SOME AMPHIPHILIC STYRYL DYES AND THEIR APPLICATION ON WOOL FABRIC
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Date
2016-05
Authors
GANGAS, REUBEN
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Abstract
Amphiphilicstyryl dyes were synthesized based on condensation of 2-methylbenzothiazolium salt of alkyl halide and 4-dimethylaminobenzaldehyde. The identity of the resultant dyes was investigated using FTIR, UV-Visible spectroscopy and Mass spectrometry. Two commercial dyes were compared with the synthesized dyes and all applied on to wool fabric. The surface tension of the dyes were determined and analysis showed that the surface tension of the synthesized dyes were far lower than that observed for the commercial dyes. This low surface tension of the synthesized dyes could be attributed to the fact that the synthesized dyes arepartly surfactant themselves.In fact, the synthesized dyes were found to have equal surface tension when compared to some industrial surfactants such ascetylpyridinium chloride and cetylpyridinium bromide at room temperature at a concentration of 0.3% w/v. This low surface tension imparted by the dyes on the dyeing liquor increased significantly the mobility of these dissolved dyes in water and thus was found to be very important in the exhaustion of the dyes. The percentage exhaustion of the dyes was determined and the results indicated that high% exhaustion was achieved at a limited time as a result of increase in the mobility of the dissolved dyes molecules, consequently increasing the absorption and adsorption of the dye molecules into the fibre. Levelled dyeing was achieved, though, with poor light fastness, good wash and perspiration fastness were observed.
Description
A THESIS SUBMITTED TO THE SCHOOL OF POSTGRAGDUATE
STUDIES,
AHMADU BELLO UNIVERSITY, ZARIA
IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF
MASTER OF SCIENCE DEGREE IN COLOUR CHEMISTRY AND
TECHNOLOGY
DEPARTMENT OF TEXTILE SCIENCE AND TECHNOLOGY,
FACULTY OF SCIENCE,
AHMADU BELLO UNIVERSITY,
ZARIA, NIGERIA
Keywords
SYNTHESIS,, CHARACTERIZATION,, AMPHIPHILIC STYRYL DYES,, APPLICATION,, WOOL FABRIC